Plant for utilizing waste heat.



R. 0; MARTIN. PLANT FOR UTILIZING WASTE HEAT.

2 SHEETS.SHEET l- PatentedAu APPLICATION FILED JUNE 20, I912.

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, R. I). MARTIN.

PLANT FOR UTILIZING WASTE HEAT.

APPLICATION FILED JUNE 20. I917.

Patented Aug. 13, 1918 Z SHEETS-SHEET 2- IN l/E/I/ TOR 19.0. Mar 522ATTORNEYS m! NGRRIS FE1RS coWFnom-Lrma. WASHINGmN. u.

WITNESSES 1,275,9GQQ

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ELAN? roa u'rlmzxne wears near.

' by coke ovens.

An ob ect of the invention is to provide a simple, inexpensive andefiicient plant which can be easily controlled and which can be utilizedin connection with the waste heat.

Another object of the invention is to provide a plant formed of a seriesof small steam units, each unit receiving the waste heat from a seriesof coke ovens and whereby any of the steam-plant units may be cut outwithout materially affecting the entire plant.

With the above and other objects in view, the nature of which will morefully appear as the description proceeds, the invention consists in thenovel construction, combina tion and arrangement of parts as hereinfully described, illustrated and claimed.

In the accompanying drawings, forming part of the application, similarcharacters of reference indicate corresponding parts in all the views.

Figure 1 is a sectional elevation on line 11, Fig. 2, illustrating themain fine of a series of beehive coke ovens and a steamplant unitassociated therewith;

Fig. 2 is a plan view of a bank of beehive coke ovens, and thesteam-plant unit associated therewith, part of the top of the bank beingbroken out to show the main flue; and

Fig. 3 is an elevation of a bank of ovens showing the small steam boilerassociated therewith and means for heating the boiler independently ofthe coke ovens.

In the drawings, 1 is a coke-oven chamber provided with an outlet 5 inthe dome carried through the dirt bed 6 covering the dome of the oven.A. cover 7 is provided for the discharge to the outlet 5 whereby thesame may be maintained open or closed. Each of the series of ovens whichis to supply heat to the steam-plant unit 8 is connected by an anglingflue 9 extending from the outlet 5 of the oven to the main flue '10running between the parallel rows of the ovens.

- Specification of Letters Patent.

Patented. Aug. 213, 1918.

I Application filed time 20, 1917. Serial No. waves.

The steam-plant unit is preferably mounted on the bank of the ovens inclose proximity to one of the faces of the bank, so that an independentfireplace 11 could be provided for the boiler of the steam-plant unitbetween a pair of colreovens, as shown in the drawings. This fireplaceis connected to the main flue 10 by a flue section 12. The grate 13 forthe fireplace 11 is accessible through a fire door 16%, and a draft door15 leads to the ash pit. The two doors are maintained closed when theheat from the coke ovens is to be utilized for heating the boiler 8. A.suitable Smokestack 16 is provided for the boiler to carry off the hotgases coming from the coke ovens to the boiler.

All the boilers or steam units of the plant may be connected to a steammain 17 embedded in the dirt cover of the ovens, which dirt being botwill prevent condensation in the main. Each of the boilers is connectedto the main by a suitably insulated conduit 18 extending from the steamdome 19 of the boiler to the main.

The coke ovens may be operatedv in the usual manner by removing thecover 7 from the outlet 5 and leaving the fire doors of the boiler open.By closing the angling fines 9 at the outlet5 by bricks or by a gateoperable from the dirt bed, the coke ovens may be cut oil from theboiler. In consequence, the same may remain idle'with or without waterwithout being damaged, as the gases from the oven will not pass into thefines communicating with the boiler. On the other hand, when it isdesired to cut a boiler into the steam plant it is maintained filledwith water, the fire box is closed, the angling fines are brought intocommunication with the outlets 5, and the covers 7 are put over theoutlets. This operation, it will be noted, does not in any way afiectthe process of coking the coal, as the operation of the oven is the samewhether the cover is on or off the outlet 5.

Any type of boiler may be used and connected with as many ovens asnecessary to obtain the desired amount of steam. As previously pointedout, it is preferable to have the plant formed of a large number ofsmall units, so that the cutting in or out of one or more of the unitsof the plant will not affect the entire plant materially. These boilersmay be set at any desired relative position to the coke ovens, as thetype of boiler and its position relative to'theplant will have to betaken into considerationmOf' course, the result will be the same.

I claim: 1. A plant for utilizing waste heat from coke ovens,comprisinga bank of coke ovens arranged in two parallel rows, each ovenhavlng 111 its top a tubular neck 'closedby'a cover, a main fl'ueextending between therows of ovensand -in engagementiwith the severalovens: intermediate their tops and bottoms, a curved branch flue foreach oven,

Copies '0! this, patent may'rbe obtai-ndtor' steamgenerating unit andbetween a pair of the ovens and-a flue leading from the main flue intothe furnace flue.

2. A plant-for utilizing waste heat from coke ovens, comprising aplurality of ovens arra-nged -iniparallel rows, each oven having in itstop a tubular neck closed by a cover, a main flue extending between therows of ovens, a branch flue for each oven, leading from the neck of theoven below itscover, to'

l the main'flu'e, a steam generatingunit, a furnace havingaflue'andarranged belowthe said unit and'between the outer portions oftwo ovens, and a flue leading from the -I1'1EL111 1 flue between the twoSEUClOVGDS into thcfurnace flue.

RICHARD 'D. MARTIN.

five cents sac-1r,ti -addressing thy-Commissioner o'L-Pate'ntgWashington, .D. C."

